Valve.



' Patented im. 19

.L E. MCELROY, own.

S. H. MCELROY. EXECUTRIX.

K VALVE. APPUCATI'OR FILED -FEB- i5, 1909. l

-fi-nini l.

life?.

ierr s JAMES F. MCELRTZ', 0F .LBNQ NET YGRK; SUSIE MCELROY, EXECUTRIX OF SAID JAMES F. MCELRY, DECEASED, ASSIGNOR 'EQ CONSOLIDATED CAR-HEATING CGMPANY, L CORPO'TGN 0E 'VEST TIRGENIA. i

Application filed February 15, 190g.

To all i/wm 'it www raf/1.06am:

Be it known that l. Simms F. hiolCLnoY, a citizen oi the llnited'State y residing at Albany. in the county of Alle-any and Statie of New York. have invented Certain new and useful improvements in Valves. l

My present invention relates to vulves toil controlling the 'admi' ion and exhaust ot fluids to and from iinid ino'tors and more particularly to controlling the ope-ration of a 'linid niotor door operating mechanism. such as is described in niy application for Letters Patent tiled i*`ehrnary l5. i909. Ser'el No. 477.867. and has tor its ohjeet the provision of a valve where-.bv Ithe admission and ere haast of compressed Huid to and from each end of the. motor evlini'ler and the movement oi the motor piston can he controlled with ease and certainty. v

ln the accompanying drawingz--lfigin'es l. 2 and 2.5 shov horizontal sections of my nnproved valve in the various positions sinned. duri l operntion. Fig. 4- shows an arrangeini..y of controlling levers ot han dles. adapted to oper: te :n v improved valve. Fig. 5 shows a plan view oi tivo of niyimproved falves .'-iini'iected to such operating ineehan isin.

Referring to the draivii'igs. the valve coninrises a housing 1 in which is rotatably inounted a plug 2, held in position in suitable manner. rlheieasinig is provided with the AVsupply passage 8, the exhaust passage at 9,

while l() and Y1l. are working passages which are connected to the opposite ends of the inotor cylinder The ports in plug Q are preferably arranged as shown in the drawine. consisting of two cross ports i2 and i3 and two diagonal ports l-i and 15, con'nnunieating with cross port 13 and with each other. y

The operation of my improved valve is as followst ln the position shown in Fig, l, the

compressed duid is being` supplied through passage S, port 12 and passage l0, to one end of the motor cylinder, While it is being exhausted from the other end ot' the motor cylinder through passage il., port l5. port le and passage wilfhen the valve is turned to 'the position shown in '1n 27 compressed fluid isibeing supplied to 'the other end of the motor .Cylinder from to 'which it Was supplied when the valve was in the position shown in Fig. l., through passage 8, port 12 Specification of Letters lkaten'r..

Patented Unt. i9, i915.,

sei-iai un. Liri/.esa

and passage l, and itis heilig exhausted from theopposite end of the motor cylinder through passage 10. port 14, port l5 and passage 9.

Fig. 3 shows an intermediate position loe'- tvveen those shown at Figs. l and 2, in which position the supply and exhaust ports are both closed. and the tivo working'passages leading to the ends of the motor cylinder are connected to each other through passage ll, port 13. and passage 10. This position is useful for stopping the motor at any point in its stroke by equalizing the pressure in the tivo ends of the motor Cylinder, and as this position occurs during the Change of nosition of the valve from the )osition' l shown in Fig. l to that shown in Fig. 2, part of the linid contained in one end ot' the motor cylinder will passinto the opposite end of the inotor cylinder before that end is connected to the source ot' supply, thereby saving a Considerable quantity of coinpressedtinid in the operation of the motor.

lllhen the valve is in the position'shown in Fig, 3. the door or other object operated by the motor may he operated by hand. since the fluid in the inotor cylinder may be forced from one end ot' the motor cylinder to the other. vWhen the valve is moved to the cutoil1 position intermediate between the operating positions and the short oircniting positions just described, the door `will be checked pneuinatioally and looked against movement in either direction. This allows the door to be rst hecked and then, by a further movement of the valve. short cir` cuited7 so as to be free f or manual operation. Fig. 4 shows meohanisrn for operating tivo sets of valves from the saine position. It consists of a rod or pipe 17, surrounded by a pipe 18. Rod 17 has ations end of it a handle 19,A and pipe 18 has attached to it a handle 20. At the opposite ends of rod 17 and pipe 18 are attached levers 2l and 22, which are connected to the respective valves by means of links, as shown in Fig. 5. The

two operatinv handles 19 and 20 form reb spectively the top and bottom portions of a Aloop which may he conveniently grasped which maybe made, l jdo not desire toreoni l Ov Noclaiin is made in this application, for.

details of the valve, nor for a door operating method, as the saine forni the subject,

matter. of an application tiled November l5, 1913, Serial Nlnnber 801,161.

Vhat I' claim as new and desire to secure by Letters Patent of the United States, is:

1. The combination with two separate motor-controlling valves. ot' adjacent operating handles therefor forming' the respective halves of a coinlnon loophandle.

2. The combination with t-wolseparate' motor-controlling valves. ol pa rallel. operat- "ing shaftsi therefor, and handles on the respective shafts, forming respectively tliel two halves of a common loop handle.

`v3. The combination with two' Aseparate motor-controlhng valves, of concentric operating shafts .t-herefoiy'an-d operating handles on said shafts,l forming` the respective halves ot' a common loop handle. f v

In w1tness whereot, I have hereunto signed my naine in the presence of two' \vit-. 

